Alternative means of controlling urban insect pests by using ultrasonic frequencies are available and marketed to the public. However, few of these devices have been demonstrated as being effective in repelling insect pests such as mosquitoes, cockroaches, or ants. Despite the lack of evidence for the efficacy of such devices, they continue to be sold and new versions targeting bed bugs are readily available.
However, according to a soon-to-be-published article in the Journal of Economic Entomology, commercial devices that produce ultrasound frequencies are NOT promising tools for repelling bed bugs. In "Efficacy of Commercially Available Ultrasonic Pest Repellent Devices to Affect Behavior of Bed Bugs (Hemiptera: Cimicidae)," , authors K. M. Yturralde and R. W. Hofstetter report the results of their tests of four commercially available electronic pest repellent devices designed to repel insect and mammalian pests by using sound.
The devices, which were purchased online, were used according to manufacturers' instructions. A sound arena was created for each ultrasonic device, in addition to a control arena which featured no sound. However, the authors found that there were no significant differences in the number of bed bugs observed in the control (no sound) and sound arenas, and that bed bugs were neither deterred nor attracted to the arena with the sound device.
The authors conclude that the ultrasonic devices may not have deterred or attracted bed bugs because they may not have produced the right combination of frequencies. Bed bugs are commonly exposed to frequencies made by their host species (humans) and by appliances and machines found in homes. Therefore, it may be possible that bed bugs also would exploit sounds made by their human hosts, such as breathing or snoring. Future studies of bed bug bioacoustics may be served well by using low-frequency sounds produced by host species.
Entomological Society of America: http://www.entsoc.org
This press release was posted to serve as a topic for discussion. Please comment below. We try our best to only post press releases that are associated with peer reviewed scientific literature. Critical discussions of the research are appreciated. If you need help finding a link to the original article, please contact us on twitter or via e-mail.
Traditional knowledge and scientific study are helping us begin to understand what a changing Arctic means for the marine mammal
But its government has been cutting back on climate-change measures, even arguing for a reduction in renewable-energy targets
"Climate change can no longer be denied," Obama said. "It can't be edited out. It can't be omitted from the conversation. And action can no longer be delayed."
In Michigan's orchard country, extreme heat and cold can mean disaster for fruit growers. Now some are using a new twist on old technology to fool trees when sudden, unexpected weather changes occur.
Scientists develop new technique to probe electric fields inside thunderstorms
Bees have a preference for sugar solutions laced with the pesticides, scientists say, as a separate landmark field trial show neonicotinoids harm bee populationBees may become addicted to nicotine-like pesticides in the same way humans get hooked on cigarettes, according to a new study, which was released as a landmark field trial provided further evidence that such neonicotinoids harm bee populations.
This month, the National Oceanic and Atmospheric Administration is flying an airborne research lab over oil and gas producing states.
An effort is underway to figure out how the BP oil spill harmed the Gulf of Mexico ecosystem. The damage may not be as dire as feared, but researchers say it's too soon to know the long-term impacts.
New threats to Europe’s birds and habitats directives highlight broader tensions – and opportunities – at the interface between conservation science and policy.
Rivers filled with hippo faeces may sound disgusting, but the excrement provides nutrition for fish and aquatic insects